阅读说明：本技术 片状部件的使用方法 (Method for using sheet member ) 是由 中泽武马 葛西胜哉 于 2020-04-21 设计创作，主要内容包括：将两个空间(36、37)彼此分隔开的片状部件(31)包括基材(32)和透湿膜(33),基材(32)具有第一主面(32a)和第二主面(32b),透湿膜(33)设置在基材(32)的第一主面(32a)侧。在由片状部件31彼此分隔开的两个空间(36、37)的水蒸气压力互不相同的情况下,在基材(32)的第一主面(32a)布置在两个空间(36、37)中水蒸气压低的一个空间中的状态下使用片状部件(31)。(A sheet-like member (31) that partitions two spaces (36, 37) from each other includes a base material (32) and a moisture-permeable film (33), the base material (32) having a first main surface (32a) and a second main surface (32b), the moisture-permeable film (33) being provided on the first main surface (32a) side of the base material (32). In the case where the water vapor pressures of two spaces (36, 37) partitioned from each other by the sheet-like member 31 are different from each other, the sheet-like member (31) is used in a state where the first main surface (32a) of the base material (32) is arranged in one space where the water vapor pressure is low in the two spaces (36, 37).)

1. A method of using a sheet-like member (31) comprising a base material (32) and a moisture-permeable film (33), the sheet-like member (31) separating two spaces (36, 37) from each other, the base material (32) having a first main surface (32a) and a second main surface (32b), the moisture-permeable film (33) being provided on the first main surface (32a) side of the base material (32), characterized in that:

in the case where the two spaces (36, 37) separated from each other by the sheet-like member (31) differ in water vapor pressure from each other, the sheet-like member (31) is used in a state where the first main surface (32a) of the base material (32) is arranged in one of the two spaces (36, 37) in which the water vapor pressure is low.

2. The use method of a sheet member according to claim 1, characterized in that:

the moisture permeable film (33) is provided on the first main surface (32a) of the base material (32).

Technical Field

The present disclosure relates to a method of using a sheet member.

Background

A total heat exchange element in which a separator is provided, the separator being composed of a sheet member having a base layer and a moisture-permeable film layer provided on the base layer, has been known (for example, patent document 1). In such a total heat exchange element, since the separator has the base layer and the moisture-permeable film layer, the problem that condensed water drops downward when used in a high-humidity environment is solved.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 5230821

Disclosure of Invention

Technical problems to be solved by the invention

A plurality of separators made of sheet members are arranged in the total heat exchange element, and the separators are used in this manner. However, heretofore, no sufficient studies have been made on a method of using a sheet member that maximizes the performance of each separator.

The purpose of the present disclosure is: a sheet member comprising a base material and a moisture permeable film is effectively utilized.

Technical solution for solving technical problem

The first aspect of the present disclosure is directed to a method of using a sheet member 31, the sheet member 31 including a base material 32 and a moisture permeable film 33 and separating two spaces 36, 37 from each other, the base material 32 having a first main surface 32a and a second main surface 32b, the moisture permeable film 33 being provided on the first main surface 32a side of the base material 32. As for the method of using the sheet member 31, in the case where the two spaces 36, 37 partitioned from each other by the sheet member 31 have different water vapor pressures from each other, the sheet member 31 is used in a state where the first main surface 32a of the base material 32 is arranged in one of the two spaces 36, 37 having a lower water vapor pressure.

The inventor of the present application finds, through intensive research, that: depending on the relative humidity of the surrounding environment, both the case where the moisture permeation resistance of the substrate 32 is smaller than the moisture permeation resistance of the moisture permeable film 33 and the case where the moisture permeation resistance of the moisture permeable film 33 is smaller than the moisture permeation resistance of the substrate 32 may be present. The inventors of the present application have conducted intensive studies and found, as a result, that: in the case where the moisture permeable film 33 is provided on the first main surface 32a side of the substrate 32, particularly under the relative humidity condition where the moisture permeability resistance of the substrate 33 is smaller than the moisture permeability resistance of the moisture permeable film 33, when the sheet member 31 is used with the first main surface 32a of the substrate 32 arranged in a predetermined space and the second main surface 32b of the substrate 32 arranged in a space having a higher water vapor pressure than the predetermined space, the amount of moisture passing through the sheet member 31 (hereinafter also referred to as the moisture permeable movement amount) is larger than when the same sheet member 31 is used in an opposite arrangement state. The first aspect is obtained by applying the finding that the sheet member 31 is used such that the first main surface 32a of the base material 32 is arranged in one of the two spaces 36, 37 partitioned from each other by the sheet member 31 and having a low water vapor pressure. In this way, the amount of moisture permeation movement of the sheet member 31 including the base material 32 and the moisture permeable film 33 can be maximized, and the sheet member 31 can be effectively used.

A second aspect of the present disclosure is based on the first aspect, and is characterized in that: the moisture permeable film 33 is provided on the first main surface 32a of the substrate 32.

In the second aspect, the sheet member 31 including the base material 32 and the moisture permeable film 33 can be easily manufactured.

Drawings

FIG. 1 is a schematic view of a ventilation device including a total heat exchange element according to an embodiment;

FIG. 2 is a schematic perspective view of a total heat exchange element according to an embodiment;

fig. 3 is a sectional view of a main portion of a total heat exchange element in the embodiment;

fig. 4 is a sectional view of a main part of a total heat exchange element in other embodiments.

Detailed Description

The total heat exchange element 30 in the embodiment will be explained.

Air exchange device

The total heat exchange element 30 in the present embodiment is provided in the ventilator 10. Here, the ventilator 10 including the total heat exchange element 30 will be described.

As shown in fig. 1, the ventilation device 10 includes a housing 15 that houses a total heat exchange element 30. The casing 15 is provided with an outside air inlet 16, an air supply port 17, an inside air inlet 18, and an exhaust port 19. An air supply-side passage 21 and an air discharge-side passage 22 are formed in the internal space of the housing 15. An outside air intake port 16 is connected to one end of the air supply passage 21. An air supply port 17 is connected to the other end of the air supply-side passage 21. An internal air intake port 18 is connected to one end of the exhaust-side passage 22. An exhaust port 19 is connected to the other end of the exhaust-side passage 22.

The total heat exchange element 30 is arranged to transversely pass through the supply-side passage 21 and the exhaust-side passage 22. The total heat exchange element 30 is provided in the casing 15 in a state where a first air flow path 36 described later communicates with the supply-side passage 21 and a second air flow path 37 described later communicates with the exhaust-side passage 22. The details of the total heat exchange element 30 will be described later.

The ventilation device 10 further includes an air supply fan 26 and an exhaust fan 27. The air supply fan 26 is disposed on the downstream side (in other words, the air supply port 17 side) of the total heat exchange element 30 in the air supply-side passage 21. The exhaust fan 27 is disposed on the downstream side (in other words, the exhaust port 19 side) of the total heat exchange element 30 in the exhaust-side passage 22.

In the ventilator 10, outdoor air flows toward the indoor in the supply-side passage 21, and indoor air flows toward the outdoor in the discharge-side passage 22. The outdoor air flowing in the supply-side passage 21 and the indoor air flowing in the exhaust-side passage 22 exchange sensible heat and moisture (latent heat) in the total heat exchange element 30.

-total heat exchange element-

As shown in fig. 2 and 3, the total heat exchange element 30 is a cross-flow heat exchanger in which a plurality of first air flow paths 36 and a plurality of second air flow paths 37 are formed. The total heat exchange element 30 is formed in a quadrangular prism shape as a whole by alternately laminating a plurality of separators 31 and a plurality of distance maintaining members 34 together. In the total heat exchange element 30, the spacing between the adjacent separators 31 is substantially kept constant by the spacing-maintaining members 34.

The partition plate 31 is a flat sheet-like member formed in a substantially square shape in plan view. The separator 31 has a porous substrate 32 and a moisture permeable film 33. The thickness of the separator 31 is 30 μm or less, but is not limited thereto.

The porous substrate 32 is a plate-like member having a first main surface 32a and a second main surface 32 b. The material of the porous substrate 32 is, for example, a nonwoven fabric made of resin, metal, glass, pulp, or the like, or a film made of resin, metal, or the like. The thickness of the porous substrate 32 is several tens μm or less, but is not limited thereto. The porous substrate 32 is permeable to moisture. The porous substrate 32 constitutes a substrate.

The moisture permeable film 33 is a sheet-like member provided on the first main surface 32a of the porous substrate 32. The moisture permeable film 33 covers the first main surface 32a of the porous substrate 32. The moisture permeable film 33 is not provided on the second main surface 32b of the porous substrate 32. The material of the moisture permeable film 33 is, for example, a polymer material (e.g., polyurethane) containing a hydrophilic group and a hydrophobic group. The thickness of the moisture permeable film 33 is 1 μm or less, but is not limited thereto. The moisture permeable film 33 is permeable to moisture.

The pitch holding member 34 is a corrugated plate-like member formed in a substantially square shape in plan view. The pitch retaining member 34 is formed with a plurality of peak portions 34a and a plurality of valley portions 34b, and ridge lines of the plurality of peak portions 34a and the plurality of valley portions 34b are linear. The ridges 34a and the valleys 34b are substantially parallel to each other. The mountain portions 34a and the valley portions 34b are alternately formed on the pitch retaining member 34. The space maintaining member 34 maintains the space of the separators 31 disposed on both sides thereof.

In the total heat exchange element 30, the first air flow paths 36 and the second air flow paths 37 are alternately formed along the stacking direction of the separators 31 and the pitch retaining members 34 (in other words, the central axis direction of the total heat exchange element 30). The adjacent first air flow path 36 and second air flow path 37 are separated from each other by the partition plate 31. The first air flow path 36 and the second air flow path 37 constitute two spaces.

In the total heat exchange element 30, the pitch retaining members 34 adjacent to each other with the partition plate 31 interposed therebetween are arranged such that the ridge directions of the respective waveforms are substantially orthogonal to each other. As a result, in the total heat exchange element 30, the first air flow path 36 opens to a pair of opposite side surfaces of the total heat exchange element 30, and the second air flow path 37 opens to the remaining pair of opposite side surfaces of the total heat exchange element 30.

As shown in fig. 3, each separator 31 is arranged such that the first main surface 32a provided with the moisture permeable film 33 faces the first air flow path 36. In other words, each separator 31 is arranged such that the second main surface 32b on which the moisture permeable film 33 is not provided faces the second air flow path 37. The first main surfaces 32a of the separators 31 adjacent to each other with the first air flow path 36 interposed therebetween face each other. The second main surfaces 32b of the separators 31 adjacent to each other with the second air flow path 37 interposed therebetween face each other.

Arrangement of the total heat exchange element

Consider a state in which the vapor pressure of the indoor air is lower than the vapor pressure of the outdoor air, for example, in summer. In this state, the total heat exchange element 30 is arranged so that the second air flow path 37 communicates with the air supply-side passage 21, and the first air flow path 36 communicates with the exhaust-side passage 22. In this way, the second main surface 32b of the porous substrate 32 is arranged to face the second air flow path 37 communicating with the supply-side passage 21, and outdoor air having a higher water vapor pressure than the indoor air in the exhaust-side passage 22 flows through the second air flow path 37, while the first main surface 32a of the porous substrate 32 is arranged to face the first air flow path 36 communicating with the exhaust-side passage 22, and indoor air having a lower water vapor pressure than the outdoor air in the supply-side passage 21 flows through the first air flow path 36.

On the other hand, a state where the vapor pressure of outdoor air is lower than the vapor pressure of indoor air, for example, in winter, is considered. In this state, the total heat exchange element 30 is arranged so that the first air flow path 36 communicates with the air supply-side passage 21, and the second air flow path 37 communicates with the exhaust-side passage 22. In this way, the first main surface 32a of the porous substrate 32 is arranged to face the first air flow path 36 communicating with the supply-side passage 21, and outdoor air having a lower vapor pressure than the indoor air in the exhaust-side passage 22 flows through the first air flow path 36, while the second main surface 32b of the porous substrate 32 is arranged to face the second air flow path 37 communicating with the exhaust-side passage 22, and indoor air having a higher vapor pressure than the outdoor air in the supply-side passage 21 flows through the second air flow path 37.

Effects of the embodiment

The separator 31 in the present embodiment is used in a state where the first principal surface 32a of the substrate 32 is arranged in one space where the water vapor pressure is low in the two spaces 36, 37 in a state where the water vapor pressures of the two spaces 36, 37 partitioned from each other by the separator 31 are different from each other, wherein the separator 31 includes a porous substrate 32 and a moisture permeable film 33, the porous substrate 32 has a first principal surface 32a and a second principal surface 32b, and the moisture permeable film 33 is provided on the first principal surface 32a side of the porous substrate 32. The use method is obtained by applying the above finding, in which the separator 31 is used by disposing the first main face 32a of the porous substrate 32 in one of the two spaces 36, 37 partitioned from each other by the separator 31 and having a low vapor pressure. In this way, the amount of moisture permeation movement of the separator 31 including the porous substrate 32 and the moisture permeable film 33 can be maximized, and the separator 31 can be effectively utilized.

In the method of using the separator 31 in the present embodiment, the moisture permeable film 33 is provided on the first main surface 32a of the porous substrate 32. Therefore, the separator 31 including the porous substrate 32 and the moisture permeable film 33 can be easily manufactured.

(other embodiments)

The above embodiment may have the following configuration.

For example, as shown in fig. 4, a moisture permeable film 33 may be provided inside the porous substrate 32. Here, the moisture permeable film 33 is provided on the first main surface 32a side of the porous substrate 32. Specifically, in the porous substrate 32, the moisture permeable film 33 is provided at a position closer to the first main surface 32a than an intermediate surface (indicated by a chain line in fig. 4) located between the first main surface 32a and the second main surface 32 b.

For example, in the total heat exchange element 30, the first main surfaces 32a of the porous substrates 32 of all the separators 31 may not be arranged in the first air flow paths 36. In other words, the use method of the present disclosure may also be applied to only a part of the plurality of separators 31 in the total heat exchange element 30.

For example, the total heat exchange element 30 may be any type of total heat exchange element other than a cross-flow type total heat exchange element, and may be, for example, a convection type total heat exchange element.

While the embodiments and the modifications have been described above, it is understood that various changes can be made in the technical aspects and embodiments without departing from the spirit and scope of the claims. The above embodiments and modifications may be appropriately combined and replaced as long as the functions of the objects of the present disclosure are not affected.

Industrial applicability-

In view of the foregoing, the present disclosure is useful for methods of using sheet components.

-description of symbols-

31 baffle (sheet component)

32 porous substrate (substrate)

32a first main surface

32b second main surface

33 moisture permeable film

36 first air flow path (space)

37 second air flow path (space)